Customize: custom CSS help link is not helpful
|Reported by:||celloexpressions||Owned by:||helen|
|Component:||Customize||Keywords:||has-patch commit dev-reviewed|
I just realized that the custom CSS help text still points to what was intended as a temporary/placeholder link: https://codex.wordpress.org/Know_Your_Sources#CSS.
There are numerous problems with this link, but the biggest is that it's linking to a place on a page, which causes confusion when users start scrolling through to find what they're looking for (see user testing https://make.wordpress.org/design/2016/11/04/4-7-beta-1-user-testing-in-the-customizer-and-with-twenty-seventeen/). The page is on the Codex and mostly contains a number of links. We can do much better over time, but with the link in core we're currently stuck with this location for building out that documentation.
Can we make a placeholder handbook page for custom CSS for now? Maybe https://developer.wordpress.org/themes/basics/additional-css/? That could move to a user handbook in the future and generally continue to be built out separately from core, but the current link is not in a good place for that documentation to be built out over time. The link is translatable, so this would be a string change; however, putting in 4.7 for now for tracking.